Re: [CAD_CAM_EDM_DRO] Xylotex Pwr Sup replacement

On 11/16/2011 1:14 AM, Chuck Merja wrote:

> Well, my initial diagnosis of the power supply might have not been the
> whole
> problem. I plugged in a 19V 4.5A laptop power supply that had an open
> circuit voltage of 19.8 ish and the green light on the power supply went
> out, and the voltage to the controller was 0. I'm a rank amateur, but I'm
> thinking that isn't good. So the 24V 6.5A replacement PS I ordered should
> be here by Fri, but I'm thinking I should somehow test the Xylotex drivers
> to see if they are any good. Suggestions? Cuz I'd like not to just plug in
> that new PS and have it come to an early demise.
>
> And yes, I'll probably just get a set of Geckos - G540's (with one
> dissenting vote due to not being able to stop one axis is my current
> tally)
> - yes?
>
> I'm pretty sure the current steppers are Automation Direct Sure Step, NEMA
> 23, 276oz-in.
> <http://www.automationdirect.com/adc/Shopping/Catalog/Motion_Control/Stepper
> _Systems/Motors_-z-_Cables/STP-MTR-23079>
> Should I get bigger motors too, or try the new driver on these steppers?
>
> Thanks, Chuck

The G-540 is a set of G-251s in a box. It is 4 axis. You won't regret
this decision, but you will want a 48V power supply.
The current steppers should be fine.
Do not connect or disconnect anything with power to your drivers,
especially that Xylotex. It takes a while for the voltage to dissipate,
make sure it's gone with a voltmeter.
Your new supply should have short protection. If so, it shouldn't be
damaged if the Xylotex is bad. When you apply power, flip the switch
quickly on and back off. If there is a problem, hopefully the short
duration will mitigate any damage.

--


Ron Thompson
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